Marinus Willemstijn wrote:
> Maybe this is general knowledge but could someone please direct me to some
> information on lightning arrestors for my coaxial lines running to the
> tower. I need some information like:
>
>
>
> 1) Is there a specific distance they should be installed form the shack
> or tower?
>
> 2) Which are the most effective and best value for money?
>
>
>
> Thank you in advance for your response and my apologies if this is off
> topic.
>
a) Are you trying to meet a regulatory requirement (electrical code
requires specific types of antenna discharge units)
b) what are you protecting? The house from burning down? The radios from
getting damaged? The coax from being damaged?
c) Are you protecting against a direct strike, or against induced
currents/potentials from a nearby strike.
d) do you have any "availability" or "mean time to repair" requirements?
(For instance, if you can be off the air, and you don't have a lot of
lightning, maybe spending the money on an insurance policy that will
replace the gear is a better strategy. If you're a mission critical
comm facility used for air traffic control during thunderstorms, then a
different approach is probably needed.)
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